The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1993
Filed:
Oct. 30, 1992
Applicant:
Inventors:
Tetsuya Hayashi, Itami, JP;
Tosio Fujiwara, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K / ;
U.S. Cl.
CPC ...
72364 ; 29888025 ; 418178 ;
Abstract
An oil groove is formed on the end surface of a rotor of an aluminum alloy for a compressor of a vane type, in an economical manner by a method comprising forming the oil groove of a concave type on the end surface of the rotor slidably moving in contact with a side plate by warm-pressing a die stamp.
Hayashi, Tetsuya. (1993). Method of forming an oil groove on the end surface of a rotor of an (U.S. Patent No. 5265457). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5265457
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile